2004 SR Johnson 2 Stroke 9.9, 15, 25, 30 HP Outboards Service Manual, Page 156Get this manual
FUEL SYSTEM
CARBURETOR
Visually inspect all gasket surfaces for nicks or irregularitiesCheck for excessive throttle shaft playCheck for throttle valve misalignmentIf necessary, remove the calibration pocket core plug to inspect the pocket for damage or restrictions Drive small punch not more than 18 in(3 mm) through plug and pry out Install new core plug with the convex side upSeat the plug using flat end punch and plastic malletApply Gasoila sealer to the rim of the core plug after it is seated